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Is Mint (Peppermint) Toxic to Dogs?

⚠️ Mildly ToxicSeverity: Mild
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.
Mint is mildly toxic to dogs. Leaves and stems cause vomiting and diarrhea when eaten in quantity, though a leaf or two is usually harmless.

Also known as: Peppermint, Garden Mint, Mentha piperita, Spearmint · Mentha piperita

What makes it toxic

Menthol and related essential oils that irritate the stomach and intestines when a meaningful amount is consumed.

Warning signs to watch for

Vomiting, diarrhea, drooling and mild discomfort within hours of eating leaves or chewing the plant.

What to do if your dog eats it

Offer water, remove access and watch. Contact your vet if GI signs last more than a day.

Common questions

Are mint-flavored treats like gum dangerous to dogs?

Yes, seriously — sugar-free gum often contains xylitol, which is life-threatening to dogs, and some mint products also carry it. The fresh plant is the mild risk; processed mint products are the emergency.

Is spearmint safer than peppermint for dogs?

Slightly — spearmint carries less menthol. Both are mild GI irritants in quantity, so neither belongs in a chewer’s reach.

More plants checked for dogs

Pothos☠️ ToxicYes, pothos is toxic to dogs. Chewing any part of the vine releases calcium oxalate crystals thaAloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to dogs. The skin and latex layer of the leaf contain coSpider Plant✅ Non-ToxicNo, spider plants are non-toxic to dogs. A dog that nibbles the arching leaves is not at risk ofEaster Lily⚠️ Mildly ToxicEaster lilies are only mildly toxic to dogs — they usually cause stomach upset, not the fatal kiSago Palm☠️ ToxicYes — sago palm is severely toxic to dogs, with a documented fatality rate around 50% when untreBoston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to dogs. Chewing a frond will not poison your dog.

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.